Hi Don! Thank you for good advice once again!
> > C75 in your K2 needs less capacitance. You can try several other 470 pf > capacitors (NPO disc ceramics or C0G mono capacitors) to see if you can > discover one that is on the low side of tolerance rather than the high > side (like yours), or you can replace C75 with a 390 to 450 pf capacitor > and add padder capacitors to bring the total capacitance up so the 160 > meter VCO voltages are in the 1.5 to 7.0 volt range over the entire > tuning range. > Today I got some NPO disc ceramic caps and tried different variations. With 330+150 pF in parallel measured VCO voltages are now inside 1.5-7.0 V: 1800 kHz 1.6 V 2000 kHz 4.0 V These new capacitors are not small in physical size, bigger is 10 mm, about 0.4" in diameter. Does size matter in this circuit? Best Regards Jukka, OH4MFA K2/100 #4293 _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
